Here’s another 555 timer project for a pumpkin! Matthew writes – “I decided to use a little nerdery to make up for my lack of artistic talent. After scooping out the guts and carving an old school, evil-eyed, jagged-toothed, jack-o-lantern, I decided to do something a little different to light it. I came up with this simple circuit using a LM555 timer to blink LEDs on and off…” [via] – Link.